Bill validator



FIG. 1 is a front elevational view of the bill validator of our design;

FIG. 2 is a rear view elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right elevational view thereof; and,

FIG. 6 is a left elevational view thereof. 

The ornamental design for a bill validator, as shown and described. 